US4477514AExpiredUtility

Method for treating cellulosic textile fabrics with aqueous emulsions of carboxyfunctional silicone fluids

61
Assignee: DOW CORNINGPriority: Nov 14, 1983Filed: Nov 14, 1983Granted: Oct 16, 1984
Est. expiryNov 14, 2003(expired)· nominal 20-yr term from priority
Inventors:Ronald Paul GeeRobert E. Kalinowski
Y10T442/2393D06M 15/6433D06M 15/53Y10T442/2295D06M 13/165
61
PatentIndex Score
16
Cited by
7
References
23
Claims

Abstract

A method for improving properties of a cellulosic textile fabric is disclosed. The fabric is first impregnated with an aqueous emulsion of a carboxyfunctional silicone fluid stabilized by a nonionic surfactant having a particular HLB value, and then heated to crosslink the carboxyfunctional silicone fluid.

Claims

exact text as granted — not AI-modified
That which is claimed is: 
     
       1. A method for improving properties of a cellulosic textile fabric, said method comprising I. impregnating said cellulosic textile fabric with an aqueous emulsion, said emulsion comprising a combination of (A) 0.1 to 60 percent by weight, based on the total weight of the emulsion, of a carboxyfunctional silicone fluid having the general formula   QMe.sub.2 SiO(Me.sub.2 SiO).sub.x (MeRSiO).sub.y SiMe.sub.2 Q        wherein in said formula there is 0.5 to 10 mole percent of the units (MeRSiO) present, 90 to 99.5 mole percent of (Me 2  SiO) units present and the total number of units in the molecule is 30-300, Me is a methyl radical   R is a carboxyfunctional radical, said carboxyfunctional radical being selected from the group consisting of carboxyalkyl radicals and carboxythioalkyl radicals,   Q is selected from the group consisting of R, Me and OH groups,   x has a value of 27 to 297,   y has a value of 1 to 30;     (B) 0.01 to 10 percent by weight, based on the total weight of the emulsion, of a nonionic surfactant having an HLB value of 14.5 to 16.7, and   (C) 30 to 99.89 percent by weight, based on the total weight of the emulsion, of water, and II. applying a sufficient amount of heat to the impregnated textile fabric to render the carboxyfunctional silicone fluid crosslinked.       
     
     
       2. The method of claim 1 wherein R is a carboxythioalkyl radical. 
     
     
       3. The method of claim 2 wherein the carboxythioalkyl radical is the --CH 2  CH 2  SCH 2  COOH radical and the nonionic surfactant has an HLB value of from 14.5 to 15.0. 
     
     
       4. The method of claim 3 wherein Q is a methyl radical. 
     
     
       5. The method of claim 4 wherein component (A) constitutes from 0.5 to 1.5% by weight, component (B) constitutes from 0.05 to 0.2% by weight, and component (C) constitutes from 99.45 to 98.3% by weight, all of the above percentages by weight based upon the total weight of the emulsion. 
     
     
       6. The method of claim 5 wherein there are 1 to 5 mole percent (MeRSiO) units present in the carboxyfunctional silicone fluid. 
     
     
       7. The method of claim 6 wherein there are 2 to 3 mole percent (MeRSiO) units present in the carboxyfunctional silicone fluid. 
     
     
       8. The method of claim 2 wherein the carboxythioalkyl radical is the --CH 2  CH 2  SCH 2  COOH radical and the nonionic surfactant has an HLB value of from 16.2 to 16.5. 
     
     
       9. The method of claim 8 wherein Q is a methyl radical. 
     
     
       10. The method of claim 9 wherein component (A) constitutes from 0.5 to 1.5% by weight, component (B) constitutes from 0.05 to 0.2% by weight, and component (C) constitutes from 99.45 to 98.3% by weight, all of the above percentages by weight based upon the total weight of the emulsion. 
     
     
       11. The method of claim 10 wherein there are 1 to 5 mole percent (MeRSiO) units present in the carboxyfunctional silicone fluid. 
     
     
       12. The method of claim 11 wherein there are 2 to 3 mole percent (MeRSiO) units present in the carboxyfunctional silicone fluid. 
     
     
       13. The method of claim 1 wherein R is a carboxyalkyl radical. 
     
     
       14. The method of claim 13 wherein the carboxyfunctional radical is the --CH 2  CH(CH 3 )COOH radical and the nonionic surfactant has an HLB value of from 15.6 to 16.0. 
     
     
       15. The method of claim 14 wherein component (A) constitutes from 0.5 to 1.5% by weight, component (B) constitutes from 0.05 to 0.2% by weight, and component (C) constitutes from 99.45 to 98.3% by weight, all of the above percentages by weight based upon the total weight of the emulsion. 
     
     
       16. The method of claim 15 wherein there are 1 to 5 mole percent (MeRSiO) units present in the carboxyfunctional silicone fluid. 
     
     
       17. The method of claim 16 wherein there are 2 to 3 mole percent (MeRSiO) units present in the carboxyfunctional silicone fluid. 
     
     
       18. A cellulosic textile fabric treated by the method of claim 1. 
     
     
       19. A cellulosic textile fabric treated by the method of claim 2. 
     
     
       20. A cellulosic textile fabric treated by the method of claim 3. 
     
     
       21. A cellulosic textile fabric treated by the method of claim 8. 
     
     
       22. A cellulosic textile fabric treated by the method of claim 13. 
     
     
       23. A cellulosic textile fabric treated by the method of claim 14.

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